Currently, there are two types of trainer in Korea : basic and advanced. Both models have been in operation for more than 10 years, and compared to the early stage of operation, reliability has gradually improved and failure rates have also entered a trend of stabilization. Therefore, it is necessary to extend the maintenance period considering economic feasibility. This study investigates the three maintenance period calculation methods: NAVAIR 00-25-403 [17], DOD, U.S. [4], CERL and US Army [3], with intention to extend the maintenance period of the trainer from current 200 hours to 400 hours. In addition, the maintenance period was calculated by the three methods with actual operational data. Common standards and procedures were established to apply operational data to the existing maintenance period calculation methods, the required reliability indicators were derived, and the maintenance periods was calculated based on the results, additionally, a review on the field applicability of the three maintenance cycles was conducted. An on-site interviews were conducted with the calculation results, and 11 out of the 15 items were expected to be extended by 400 hours. It was suggested that the remaining 4 items could be extended to 400 hours by supplementing the inspection method through additional analysis such as functional analysis, inspection content verification, and site connection.

1. 서 론
2. 이론적 배경
    2.1 신뢰성기반정비(RCM)
    2.2 예방정비 및 정비주기의 개념
    2.3 정비주기 산출방법
3. 정비주기 연장방안 검토
    3.1 주기산출의 절차 및 적용기준
    3.2 주기연장 시범적용
    3.3 결과 비교 및 고찰
4. 결 론
References

• Intak Jo(한국항공우주산업(주)) | 조인탁
• Jong Hun Park(대구가톨릭대학교 경영학부) | 박종훈 Corresponding Author